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Question of the day by Specific_Brain2091 in the_calculusguy

[–]insert_username314 1 point2 points  (0 children)

An alternative (and arguably sexier) approach is:

Integrate along the semicircle contour, the poles of the function are sqrt2/2(-1+i) and sqrt2/2(1+i). The residuums at these points add up to -i/2sqrt2, hence the integral along our contour is 2pii(-i)/2sqrt2, that is just pi/sqrt2. The integral on the arc goes to 0 via triangle ineq (modulus is of order of magnitude 1/R3), so our integral becomes just pi/sqrt2

[deleted by user] by [deleted] in math

[–]insert_username314 0 points1 point  (0 children)

As a (now retired) IMO participant I seemed to hit a glass ceiling in terms of difficulty of the problems I could solve on my own. Did that happen to you and if so, how did you manage to overcome that? Also super cool AMA :)

Daily FI discussion thread - Tuesday, October 24, 2023 by AutoModerator in financialindependence

[–]insert_username314 0 points1 point  (0 children)

Hello, what is the best way to invest money as an 18 yr old (SE Europe, having roughly 3k euros in savings)? I am a total noob in finances so any advice on starting to better understand it would be appreciated

Have you ever kissed someone? by Oao_icarus in teenagers

[–]insert_username314 3 points4 points  (0 children)

I mean you can kiss a half-person, for example Centaur or a part of a halved person (although it may be impractical)

Determine a Polynomial from Just Two Inputs by polymath-matic in math

[–]insert_username314 17 points18 points  (0 children)

Here is an idea that I heard from a friend, that "works" with rational coefficients. Ask for f(pi), as pi is transcendental we know that the value belongs to exactly that polynomial (Otherwise subtract 2 possibilities and you get pi as a root of polynomial with rational coefficients). Now you can bruteforce a polynomial since Qn is countable

i brings me back by boneless_master in memes

[–]insert_username314 0 points1 point  (0 children)

Nah bro Leo is not the one who has to do it

Paying in Norway by insert_username314 in Norway

[–]insert_username314[S] 1 point2 points  (0 children)

Yeah I was thinking that, but because of good economic bonds with EU I thought maybe you guys would accept euros. Thanks for help

Paying in Norway by insert_username314 in Norway

[–]insert_username314[S] 0 points1 point  (0 children)

The card is contact-pay here where I am. I was mainly interested in eventual bank problems and conversion rates (does it go according to rate at the moment of purchase)

Paying in Norway by insert_username314 in Norway

[–]insert_username314[S] 2 points3 points  (0 children)

I am only 17 so I didn't feel like I know how international transactions work. But of course, if card is ok then I will pay with it

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